Improvement in hee-gbates



@nihil tutes stent IMPROVEMENT IN FIRE-GRA'IS.

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Be it known that. I, HENRY SEELER, of Trenton, in the county of Mercer, and in the State of-New Jersey, have invented certain new and useful Improvements in Fire-Gratos; and do hereby declare that the following is afnll, clear, and exact description thereof, reference being had to the accompanyingv drawings, and the letters of reference marked thereon.

In the annexed drawings, malring part of this specification, A represents one of a series of grate-bars of any furnace or tire-grate. This grate'may b'e' cast in two parts, and the tube B',;Iuade as seen in fig. 1, muy be placed between the parts, and the two then connected together, or the bent tube B may be formed rst, and the perforated bur may be v cast around it'. The pipe B is intended to convey steam into the grate-bm', and

emit it into the' tire, through perforations-c c, in theuppcredge of the bar. l The pipepassesinto' the'bar at one veuch-:rnd then lalong through it to near the other end ofthe bar, Where it is curved and passed buck to -nearly above its place of beginning, which end is closed, running, as it returns, neer the upper edge of the bar.

Perforations in the upper portion of the pipe allow. the steam to escapelon tothe perforationsr c of the grate har, and thence into the lire. By'passng the .steam first the' length of the bar, before any of it is alloived t-o escape, it becomes superheated, and is' therebyrendered more suitable for promoting combustion. This gratebar, as represented, isiu the form of the usual double gratie-bar, having its upper face smooth, and is closed at' the .owier edge. It may bev used in any-furnace or'fire, and while creating more draught in .the fire, `.vill consume the carbon and hydrogen, and obv-iates `the necessity ofV clearing awa-y the clinkers and other substances that accumulate in the furnace sind Ere. The' steam passing from the boiler into the outer end f the pipe B, and thencelaround the pipe throughthe grate-barfbecomes superheated andasccnds into the incandescent f uel through the perforatons c c, thereby consuming the carbon and hydrogen, as before cited.

It will be understood thatthese bars are interspersed inthe furnace between the ordinary grateburs, the

number of them required being regulated by the draught in` the furnace' in which they are used. The perfora tions c c, at the rear end, are a little larger than those at the front, to correspond with the point WhereJ the bulk of the re rests on the bars: A stop-cock may be placed at the outer -end of pipe B for-regulating the flow of steaminto'the lire.

By this device and means more heats created inthe furnace, and less fuel is required For use than in the manner now commonly known. j

Haring thus fully described my invention, what I claim as new, and desire to secure by Lettera Patent, is- The within-described grate-bar A, provided with the tube B, bent asmdescribed, the upper portion of said bar and tube being perforated as specified, and used substantially as and-for the purposes set forth.

-In testimony that I claim the foregoing, [have hereunto set my hand, this 12th dayvof December,'1867.

HENRY SPEELER.

Witnesses:

(i. M. ALEXANDER, J. M. MASON. 

